Duke 957R User manual

H.C. Duke & Son, Inc. P/N 184662 August 1999 Printed in U.S.A.
OPERATOR'S MANUAL
with ILLUSTRATED PARTS LIST
TWIN TWIST
SOFT SERVE FREEZER
MODEL 957R
184662 - 8/99

i
DUKE Model 957R Soft Serve Freezer
All contents © Copyright 1999 H.C. Duke & Son, Inc., 2116 Eighth Avenue, East Moline, Illinois 61244
i
Operator’s Manual
for the
Soft Serve Twist Freezer
Model 957R

ii
DUKE Model 957R Soft Serve Freezer
SAFETY FIRST!
Follow these four steps to safety ....
WARNING
DANGER
DANGER
Whenyouseethissymbolonyour957Rorinthis
manual,bealert to the potentialforpersonalinjury.
Followrecommendedprecautions and safeoperating
practices.
The signal words — DANGER, WARNING and CAU-
TION — areused withthe safetyalert symbol.(DAN-
GERdecals on the freezer may ormay not have the
safetyalertsymbol,but the message is the same.)
Decals with the words DANGER, WARNING, or CAU-
TIONappearonthe957R. DANGER identifies the
mostserioushazard.Decalswith the words DANGER
orWARNINGaretypicallynearspecifichazardson
the957R.Generalprecautions are listed onCAUTION
safetydecals.
Inthismanual, CAUTION messages withthesafety
alert symbol call attention to safety messages.
CAUTION
1. Recognize Safety Information ....Look for this
safety alert symbol throughout this manual.
2. Understand Signal Words ....

iii
DUKE Model 957R Soft Serve Freezer
SAFETY FIRST!
3. Follow Safety Instructions ....
4. Operate Safely ....
Readandunderstandall safety messages in this
manualandonyour957R.Take notice of the location
of all decals on the 957R and keep the safety decals
ingoodcondition. Check them periodicallyandre-
placemissing,damaged, or illegiblesafetydecals.
Thesafetydecalsmustremain in place and legible for
the life of the 957R. If you need new decals, use the
informationandillustrationsonpagesivand v of this
manualtoidentifythedecalandcallorwritetoH.C.
Duke&Son,Inc.
DO NOT attempttooperatethe957RTwinTwist Soft
ServeFreezeruntilyou read and understand all safety
messagesandthe operatinginstructionsinthis
manual.
DO NOT allowuntrainedpersonneltomaintain
and/orservicethismachine. Failure to follow this
instructionmayresult in severepersonalinjury.
DO NOT operatethe957Runtilallserviceand
accesscoversaresecuredwithscrews.DO NOT
attempttorepairor maintain the 957R untilthe
mainpowersupply hasbeendisconnected.Some
freezershavemorethan one disconnect switch.
ContactyourIDQ authorized servicerepresenta-
tiveorH.C.Duke&Son,Inc.ServiceDepartment
fororiginalequipment parts.

iv
DUKE Model 957R Soft Serve Freezer
1p/n 165025 Decal—Beater Warning (1)
2p/n 165126 Decal—Panel Removal Warning (3)
Do not attempt to operate the freezer
until all safety precautions and operating
instructions in this manual are read and
understood.
Take notice of all warning, caution,
instruction and information decals (or
labels) on the freezer as shown in the
figure on the next page. The labels have
been put there to help maintain a safe
working environment.
The labels have been designed to
withstand washing and cleaning. All
labels must remain legible for the life of
the freezer. Labels should be checked
periodically to be sure they can be
recognized as warning labels.
If it is necessary to replace any label,
please contact International Dairy Queen
(IDQ), Inc. When ready to order you will
need to determine the (1) part number,
(2) type of label, (3) location of label, and
(4) quantity required, and include a return
shipping address.
You may contact IDQ as follows:
International Dairy Queen, Inc.
P.O. Box 35286
Minneapolis, Minnesota 55437
[phone]
or — for factory service assistance —
contact H. C. Duke & Son, Inc., Service
Department by phone or FAX:
Phone: [phone]
or [phone]
FAX: [phone]
(The decals on the next page are num-
bered 1 and 2. Those numbers corre-
spond to the numbers in the table below.
The table provides the part number,
description, and quantity for each decal.)
Safety Decal Locations

No. Part No. Description (Qty.)

v
DUKE Model 957R Soft Serve Freezer
Safety Decal Locations
WARNING
!
Hazardous moving parts.
Machine starts automatically.
Do not operate with panel
removed.
P/N 165126
P/N 165025
1
Before removing dispense head:
1. Turn all control switches to "OFF", and
2. Disconnect all power supplies. Unit may
have more than one power supply.
Hazardous rotating beater shaft. Do not
operate unit with dispense head removed
.
2

vi
DUKE Model 957R Soft Serve Freezer
TT
TT
TABLE OF CONTENTSABLE OF CONTENTS
ABLE OF CONTENTSABLE OF CONTENTS
ABLE OF CONTENTS
SAFETYSAFETY
SAFETYSAFETY
SAFETY ............................................................................................................................................................................................................................
............................................................................................................................................................................................................................
.............................................................................................................. ii
ii
i
SAFETY DECAL LOCATIONSSAFETY DECAL LOCATIONS
SAFETY DECAL LOCATIONSSAFETY DECAL LOCATIONS
SAFETY DECAL LOCATIONS ..........................................................................................................................................................
..........................................................................................................................................................
............................................................................. iviv
iviv
iv
PP
PP
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11
11
1INTRODUCTIONINTRODUCTION
INTRODUCTIONINTRODUCTION
INTRODUCTION ............................................................................................................................................................................
............................................................................................................................................................................
...................................................................................... 11
11
1
22
22
2NOTE TO INSTALLERNOTE TO INSTALLER
NOTE TO INSTALLERNOTE TO INSTALLER
NOTE TO INSTALLER ............................................................................................................................................................
............................................................................................................................................................
.............................................................................. 11
11
1
2.1 Uncrating and Inspection2.1 Uncrating and Inspection
2.1 Uncrating and Inspection2.1 Uncrating and Inspection
2.1 Uncrating and Inspection ....................................................................................................................................
....................................................................................................................................
.................................................................. 11
11
1
2.2 Installation2.2 Installation
2.2 Installation2.2 Installation
2.2 Installation ................................................................................................................................................................................
................................................................................................................................................................................
........................................................................................ 22
22
2
2.3ElectricalRequirements2.3ElectricalRequirements
2.3ElectricalRequirements2.3ElectricalRequirements
2.3ElectricalRequirements ..............................................................................................................................................
..............................................................................................................................................
.......................................................................33
33
3
2.4 Electrical Connections2.4 Electrical Connections
2.4 Electrical Connections2.4 Electrical Connections
2.4 Electrical Connections ..................................................................................................................................................
..................................................................................................................................................
.........................................................................33
33
3
33
33
3SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONS ............................................................................................................................................................................
............................................................................................................................................................................
......................................................................................44
44
4
3.1Particulars3.1Particulars
3.1Particulars3.1Particulars
3.1 Particulars ......................................................................................................................................................................................
......................................................................................................................................................................................
...........................................................................................44
44
4
3.2 Dimensions3.2 Dimensions
3.2 Dimensions3.2 Dimensions
3.2 Dimensions ..................................................................................................................................................................................
..................................................................................................................................................................................
.........................................................................................44
44
4
3.3 Data Plate3.3 Data Plate
3.3 Data Plate3.3 Data Plate
3.3 Data Plate ........................................................................................................................................................................................
........................................................................................................................................................................................
............................................................................................44
44
4
44
44
4PART NAMES AND FUNCTIONSPART NAMES AND FUNCTIONS
PART NAMES AND FUNCTIONSPART NAMES AND FUNCTIONS
PART NAMES AND FUNCTIONS ................................................................................................................................
................................................................................................................................
................................................................66
66
6
55
55
5OPERATOR CONTROLSOPERATOR CONTROLS
OPERATOR CONTROLSOPERATOR CONTROLS
OPERATOR CONTROLS ........................................................................................................................................................
........................................................................................................................................................
............................................................................88
88
8
66
66
6DISASSEMBLY AND CLEANINGDISASSEMBLY AND CLEANING
DISASSEMBLY AND CLEANINGDISASSEMBLY AND CLEANING
DISASSEMBLY AND CLEANING ............................................................................................................................
............................................................................................................................
.............................................................. 1111
1111
11
6.1 Cleaning Accessories6.1 Cleaning Accessories
6.1 Cleaning Accessories6.1 Cleaning Accessories
6.1 Cleaning Accessories ................................................................................................................................................
................................................................................................................................................
........................................................................ 1212
1212
12
6.2 Disassembly Instructions6.2 Disassembly Instructions
6.2 Disassembly Instructions6.2 Disassembly Instructions
6.2 Disassembly Instructions ....................................................................................................................................
....................................................................................................................................
.................................................................. 1212
1212
12
6.3 Cleaning Instructions6.3 Cleaning Instructions
6.3 Cleaning Instructions6.3 Cleaning Instructions
6.3 Cleaning Instructions ................................................................................................................................................
................................................................................................................................................
........................................................................ 1414
1414
14
77
77
7ASSEMBLYASSEMBLY
ASSEMBLYASSEMBLY
ASSEMBLY ........................................................................................................................................................................................
........................................................................................................................................................................................
............................................................................................ 1717
1717
17

vii
DUKE Model 957R Soft Serve Freezer
88
88
8STARTUPINSTRUCTIONSSTARTUPINSTRUCTIONS
STARTUPINSTRUCTIONSSTARTUPINSTRUCTIONS
STARTUPINSTRUCTIONS ..............................................................................................................................................
..............................................................................................................................................
....................................................................... 1919
1919
19
8.1 Sanitizing8.1 Sanitizing
8.1 Sanitizing8.1 Sanitizing
8.1 Sanitizing ....................................................................................................................................................................................
....................................................................................................................................................................................
.......................................................................................... 1919
1919
19
8.2 Priming8.2 Priming
8.2 Priming8.2 Priming
8.2 Priming ..........................................................................................................................................................................................
..........................................................................................................................................................................................
............................................................................................. 2020
2020
20
8.3 Dispensing Product8.3 Dispensing Product
8.3 Dispensing Product8.3 Dispensing Product
8.3 Dispensing Product ......................................................................................................................................................
......................................................................................................................................................
........................................................................... 2222
2222
22
99
99
9CLOSINGPROCEDURESCLOSINGPROCEDURES
CLOSINGPROCEDURESCLOSINGPROCEDURES
CLOSINGPROCEDURES ..................................................................................................................................................
..................................................................................................................................................
......................................................................... 2323
2323
23
1010
1010
10 GENERAL INFORMATIONGENERAL INFORMATION
GENERAL INFORMATIONGENERAL INFORMATION
GENERAL INFORMATION................................................................................................................................................
................................................................................................................................................
........................................................................ 2424
2424
24
10.1 Dairy Queen Mix10.1 Dairy Queen Mix
10.1 Dairy Queen Mix10.1 Dairy Queen Mix
10.1 Dairy Queen Mix ............................................................................................................................................................
............................................................................................................................................................
.............................................................................. 2424
2424
24
10.2 Checking the Frozen DQ Product.10.2 Checking the Frozen DQ Product.
10.2 Checking the Frozen DQ Product.10.2 Checking the Frozen DQ Product.
10.2 Checking the Frozen DQ Product. ........................................................................................................
........................................................................................................
.................................................... 2424
2424
24
10.3ProductTemperature10.3ProductTemperature
10.3ProductTemperature10.3ProductTemperature
10.3ProductTemperature ..............................................................................................................................................
..............................................................................................................................................
....................................................................... 2525
2525
25
10.4Overrun10.4Overrun
10.4Overrun10.4Overrun
10.4Overrun ......................................................................................................................................................................................
......................................................................................................................................................................................
........................................................................................... 2525
2525
25
10.5 Overrun Adjustment10.5 Overrun Adjustment
10.5 Overrun Adjustment10.5 Overrun Adjustment
10.5 Overrun Adjustment ................................................................................................................................................
................................................................................................................................................
........................................................................ 2626
2626
26
10.6Rerun10.6Rerun
10.6Rerun10.6Rerun
10.6Rerun ............................................................................................................................................................................................
............................................................................................................................................................................................
.............................................................................................. 2626
2626
26
10.7OverrunChart10.7OverrunChart
10.7OverrunChart10.7OverrunChart
10.7OverrunChart ....................................................................................................................................................................
....................................................................................................................................................................
.................................................................................. 2727
2727
27
1111
1111
11 ROUTINEMAINTENANCEROUTINEMAINTENANCE
ROUTINEMAINTENANCEROUTINEMAINTENANCE
ROUTINEMAINTENANCE ................................................................................................................................................
................................................................................................................................................
........................................................................ 2828
2828
28
1212
1212
12 TROUBLESHOOTING TABLESTROUBLESHOOTING TABLES
TROUBLESHOOTING TABLESTROUBLESHOOTING TABLES
TROUBLESHOOTING TABLES..................................................................................................................................
..................................................................................................................................
................................................................. 3131
3131
31
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T IIT II
T II
MODEL 957R REPLACEMENT PARTS w/ ILLUSTRATIONSMODEL 957R REPLACEMENT PARTS w/ ILLUSTRATIONS
MODEL 957R REPLACEMENT PARTS w/ ILLUSTRATIONSMODEL 957R REPLACEMENT PARTS w/ ILLUSTRATIONS
MODEL 957R REPLACEMENT PARTS w/ ILLUSTRATIONS............................................................................................
............................................................................................
.............................................. **
**
*
*Refer to Part II Table of Contents for help with locating part numbers and illustrations.

1
184662
DUKE Model 957R Soft Serve Freezer
2 Note to Installer
This freezer must be installed and serviced by an authorized service techni-
cian in accordance with the installation instructions.
1 Introduction
The 957R Freezer is designed to
produce DQ soft serve ice cream or
DQ frozen yogurt, with a product
serving temperature of 18 to 19ºF (-
8 to -7ºC). Use of other products in
this machine is considered misuse
(see Warranty.)
This manual has been prepared to
assist in the training of personnel
on the proper operation and gen-
eral maintenance of your Duke
freezer.
Your freezer will not compensate
for or correct any assembly or
priming errors made during the
initial start-up. Therefore, it is
extremely important to follow the
assembly and priming procedures
detailed in this manual.
Make sure all personnel respon-
sible for equipment operation
completely read and understand
this manual before operating the
freezer. When properly operated
and maintained, your freezer will
produce a consistent quality prod-
uct.
Name______________________
Address_____________________
____________________________
Phone_______________________
orH.C.Duke &Son,Inc.ServiceDept.for
factoryserviceassistance.
Phonenumber: [phone]
or [phone]
Faxnumber: [phone]
If you require technical assistance,
please contact your local authorized
H.C. Duke & Son, Inc. service com-
pany:


2184662
DUKE Model 957R Soft Serve Freezer
Figure2-1 MachineboltedtoShippingBase Figure2-2 InstallingMountingLegs
2.1 Uncrating and Inspection
CAUTION
Besuretoproperlysupport
themachinewhenremoving
boltsandinstallinglegsor
casters.
Whentheunitisreceivedandwhilethe
carrierisstillpresent, inspecttheshipping
cartonforanydamagethatmayhave
occurredintransit.Ifthecarton isbroken,
torn,orpunctured,notethedamageonthe
carrier’sfreightbillandnotifythecarrier’s
localagentimmediately.
1. Removethecartonfromthepallet,and
movethemachineascloseaspossible
tothepermanentlocation.
2. Removetheshippingboltsonthe
bottomofthefreezer(figure2-1)and
installeitherthelegsorcasters(figure2-
2).
CAUTION
Allmaterialsandconnectionsmust
conformtolocal requirementsand
beincompliancewiththe National
ElectricalCode(NEC).
1. Wherecodespermit,werecommend
thatyouinstallthefreezer oncasters
andhaveflexiblewaterandelectrical
connectionsforserviceandcleaning
ability.
2. Air-cooledmodelsrequireaminimum
6-inchclearanceontherearpanelfor
adequateventilation.
3. Watercooleddoubleheadmodels
requireaminimum6-inchclearance
ontherearpanelforadequate
ventilation.Water-cooledmodelswill
requirea1/2"MPTwaterinletand
waterwasteconnection.Both
condensersaretiedtogethersothat
onewaterinletandonewaterwaste
areallthatisrequired.Theconnec-
2.2 Installation